BITMAIN APW9 power supply

[tolyan249]

There is a BITMAIN APW9 power supply, and I don't know if anyone has worked with it. It regulates the voltage using i2c, and I can't even scan its address because the 9th SDA pulse is always 0. As a result, the ACK always comes. If I remove the connector from the power supply, the 9th SDA pulse becomes a perfect 1.